hussey



UNITED STATES PATENT OFFICE.

CHARLES A. HUSSEY, OF NEW YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO HUSSEY ELECTRIC COMPANY, OF SAME PLACE.

TELEPHONE.

SPECIFICATION forming part of Letters Patent No. 242,204, dated May 31,1881. Application filed December 17, 1880. (No model.)

To an whom it may concern:

Be it known that I, CHARLES A. HUssEY, of New York, in the county andState of New York, have invented certain new and useful Improvements inTelephones, of which the following is a specification.

The Object of my invention is to produce a telephone-instrument by meansof which speech may be produced more audibly than heretofore.

The invention consists in the combination, in a telephone-instrument, ofa diaphragm, a permanent magnet of continuous or endless form, providedwith poles or consequent points, one or more of which extend toward thecenter and are wound with wire. By this means I produce atelephone-instrument wherein a magneto-electric current may be producedof a power sufficient for the reproduction of audible speech. Ifdesirable, however, a battery may be employed in connection with it.

In the accompanying drawings, Figure l is a face view of atelephone-instrument embodying my invention, with the outer sideor-cover of the case and the diaphragm removed; and Fig. 2 is atransverse section of the same.

Similar letters of reference designate corresponding parts in bothfigures.

A designates the body of the case of the telephone-instrument,made ofany suitable .ner, and provided at the center with a mouthpiece, A

B designates a permanent magnet of a con-Q tinuous or endless form,(here shown as circular.) It is made as large as it can be accommodatedwithin the case A, and may be fastened in place therein in any suitablemanner. It is provided Withpoles or consequent points, one or more ofwhich extend radially inward. As shown, the poles or consequent pointscomprise bars B, of wrought-iron or other suitable material. These barsare at the outer ends made flat, and connected by screws or otherwise tothe sides or faces of the magnets. In the middle they are made round andwound with insulated wire united at the ends which are farthest fromeach other, as in a horseshoe electro-magnet, and at their adjacent endsor poles they are bent transversely toward the cover A of the case A ofthe instrument. The outer ends of the wire wound on these bars B extendone to a bindingscrew, D, and is thereby connected to a wire, E, leadingto the ground, and the other is connected to a binding-screw, F, and isthereby connected to a line, G, whereby it is connected with anotherinstrument of a similar kind, and thence also to the ground.

C designates a diaphragm, of thin steel, iron, or other suitablematerial, fastened to the case of the instrument in close proximity tothe adjacent or inner ends of the bars B. When any one speaks into themouth-piece against the diaphragm the motions of the diaphragm induceelectric currents in the wire wound on the bars B. These currents aretransmitted then to the wire wound on the bars B of the otherinstrument, and thereby cause the latter to attract their diaphragm andset it in motion, so as to generate corresponding soundwaves andreproduce the speech.

As the permanent magnet is a very power ful one compared with the sizeof the case of the instrument very powerful electric currents may begenerated from it, and a battery can be dispensed with; but neverthelessa battery may be employed, if desirable. The instrument is both atransmitter and a receiver.

I desire to remark that I do not confine myself to the particular shapeof the magnet shown, for it may be of various shapes as long as it iscontinuous or endless. Its poles or polar projections may also beextended toward the center of the diaphragm in various ways. Q

What Iclaim as my invention, and desire to secure by Letters Patent, is-

1. The combination, in a telephone-instrument, of a diaphragm, apermanent magnet of continuous or endless form provided with poles orconsequent points, one or more of which extend toward the center of thediaphragm and comprise a portion or portions wound with wire,substantially as and for the purpose specified.

2. The combination, in a telephone instrument, of a diaphragm, apermanent inagnetof one or more of which extend inward, substanclrcularform provided with poles or consetially as specified.

quent points comprising a bar or bars extending' radially toward thecenter and wound with HUSSEY' 5 Wire, substantially as specified.Witnesses:

3. Apermanentmagnetofcontinuousorend- T. J. KEANE, less form, havingpoles or consequent points, FREDK. HAYNES.

